Class B course
Variable signs and electronic signage
Understand LED signs, lane signals, and electronic speed limits that change.
What are variable signs?
Variable signs are electronic boards that can change the message as needed. They are used on highways, in tunnels, and on bridges to adjust the regulations according to current conditions.
Types of variable signs
| Type | Where | What it shows |
|---|---|---|
| Electronic speed limit | Highway and tunnels | Changed speed limit in traffic jams, weather, or accidents |
| Lane signal | Above lanes on highways | Green arrow (open), red cross (closed), yellow arrow (change lane) |
| Information board | Along highways | Traffic jam warning, travel time, incidents |
| Tunnel warning | At and in tunnels | Closed, fire, speed limit |
| Bridge warning | At bridges | Wind, closed for tall vehicles |
Priority in the sign hierarchy
- Variable signs are considered temporary signs and have higher priority than permanent signs.
- When an electronic speed limit shows 60 km/h, it applies even if the permanent sign says 80 km/h..
- Read more about the order in temporary signs and sign hierarchy .
In tunnels
- Red cross above the lane means the lane is closed. You must change lanes immediately.
- Flashing light at the tunnel entrance means the tunnel is closed.
- Electronic signs in tunnels can show fire warning or evacuation direction.
- Read about tunnel driving and use of lights for all tunnel rules.
Typical pitfalls
- Ignoring variable signs because the permanent sign shows a different speed limit. Variable signs apply.
- Overlooking lane signals and driving in a closed lane.
- Forgetting that variable signs can change along the way, and that you must follow the latest sign you pass.
Further reading
- See guide signs and highway signs for other signs on highways.
- Read about highways and motor traffic roads for the rules that apply on these roads.
Read next
More in Class B course
Accidents involving vulnerable road users
Special procedures and considerations for accidents involving pedestrians and cyclists.
Accidents, reporting and first aid
Checklist for safe handling of accidents and proper notification.
Adapted speed and hidden danger
What adjusted speed means in practice, and how you anticipate hazards you cannot see.
Age limits and practice driving
Everything about age limits for class B and what is required for private practice driving with a companion.